def find_if_gfs2(impl, dbg, uri):
srs = []
dev_path = blkinfo.get_device_path(dbg, uri)
unique_id = get_unique_id_from_dev_path(dev_path)
if blkinfo.get_format(dbg, dev_path) == "LVM2_member":
gfs2_dev_path = "/dev/" + unique_id + "/gfs2"
# activate gfs2 LV
cmd = ["/usr/sbin/lvchange", "-ay", unique_id + "/gfs2"]
call(dbg, cmd)
if blkinfo.get_format(dbg, gfs2_dev_path) == "gfs2":
mount = False
try:
mnt_path = getSRMountPath(dbg, gfs2_dev_path)
except:
#mount path doesn't exist
mount = True
mnt_path = mount_local(dbg, gfs2_dev_path)
# stat takes sr_path which is
# file://<mnt_path>
sr_path = "file://%s" % mnt_path
srs.append(impl.stat(dbg, sr_path))
if mount == True:
umount(dbg, mnt_path)
# deactivate gfs2 LV
cmd = ["/usr/sbin/lvchange", "-an", unique_id + "/gfs2"]
call(dbg, cmd)
return srs
def getSRpath(dbg, uri, check=True):
dev_path = blkinfo.get_device_path(dbg, uri)
sr_path = os.path.abspath(mountpoint_root + dev_path)
if check:
if not(os.path.isdir(sr_path)) or not(os.path.ismount(sr_path)):
raise xapi.storage.api.volume.Sr_not_attached(sr_path)
return sr_path
def getPVName(dbg, sr):
try:
uri = getFromSRMetadata(dbg, sr, 'uri')
dev_path = blkinfo.get_device_path(dbg, uri)
cmd = ["readlink", "-f", dev_path]
output = call(dbg, cmd)
return output.rstrip()
except Exception,e:
log.debug("Exception raised in getting PV name: %s" %str(e))
def plug_device(dbg, uri):
u = urlparse.urlparse(uri)
if u.scheme == 'iscsi':
dev_path = libiscsi.zoneInLUN(dbg, uri)
else:
# Assume it's a local block device
dev_path = blkinfo.get_device_path(dbg, uri)
if not(os.path.exists(dev_path)):
raise xapi.storage.api.volume.Sr_not_attached(dev_path)
return dev_path
def probe(self, dbg, uri):
srs = []
uris = []
u = urlparse.urlparse(uri)
if u.scheme == None:
raise xapi.storage.api.volume.SR_does_not_exist(
"The SR URI is invalid")
if u.scheme == 'iscsi':
object_map = []
keys = libiscsi.decomposeISCSIuri(dbg, u)
if keys['target'] == None:
raise xapi.storage.api.volume.SR_does_not_exist(
"The SR URI is invalid")
# uri has target but no IQN information
# Return possible URI options by querying
# the target for IQN information
if keys['iqn'] == None:
iqn_map = libiscsi.discoverIQN(dbg, keys)
if len(iqn_map) == 0:
raise xapi.storage.api.volume.SR_does_not_exist(
"No IQNs available at target")
for record in iqn_map:
object_map.append(record[2])
# uri has target and IQN but no LUN information
# Return possible URI options by querying
# the target for LUN information
elif keys['scsiid'] == None:
try:
target_path = libiscsi.login(dbg, uri, keys)
lun_map = libiscsi.discoverLuns(dbg, target_path)
finally:
libiscsi.logout(dbg, uri, keys['iqn'])
if len(lun_map) == 0:
raise xapi.storage.api.volume.SR_does_not_exist(
"No LUNs available at targetIQN")
for record in lun_map:
object_map.append(record[4])
# URI is complete. Find out if the underlying
# device is formatted using GFS2.
else:
try:
libiscsi.login(dbg, uri, keys)
dev_path = blkinfo.get_device_path(dbg, uri)
if blkinfo.get_format(dbg, dev_path) == "gfs2":
# Check if sr_path needs to be mounted
mnt_path = mount_local(dbg, dev_path)
srs.append(self.stat(dbg, uri))
# Unmount only if we mounted
umount(dbg, mnt_path)
finally:
libiscsi.logout(dbg, uri, keys['iqn'])
if len(object_map):
for obj in object_map:
new_uri = uri + "/" + obj
uris.append(new_uri)
else:
#HBA transport
dev_path = blkinfo.get_device_path(dbg, uri)
if blkinfo.get_format(dbg, dev_path) == "gfs2":
mnt_path = mount_local(dbg, dev_path)
srs.append(self.stat(dbg, uri))
umount(dbg, mnt_path)
return {
"srs": srs,
"uris": uris
}
